You are going to need a Trojan Deleter. It will run much like Nortan Anti-Virus or McAfee, but will only search for Trojans on the system. I have never heard of Coreflood, but there is no telling what information that it could have taken from your computer or keystrokes and submitted to some other user. My suggestion is to look for a product called The Cleaner. I use it at my work and at my home. Jump on this quick. You should be able to download the cleaner, but it will cost you. It could never hurt to have a Trojan deleter on your system.